2 papers
math-ph2025
Detecting local topology with the spectral localizer
Alexander Cerjan, Hermann Schulz-Baldes
The spectral localizer is a predictive framework for the computation of topological invariants of natural and artificial materials. Here, three crucial improvements on the criterio…
math-ph2025
Local perturbations of block Toeplitz matrices
Lars Koekenbier, Hermann Schulz-Baldes
This work is about the asymptotic spectral theory of tridiagonal Toeplitz matrices with matrix entries, with periodicity broken on a finite number of entries. Varying the ranks of…